Selective trapping or cutting device for use in twisting, winding, spinning or like machines



Dec. 15, 1936. H, OWENS 2,064,491

SELECTIVE TRAPPING OR CUTTING DEVICE FOR USE IN TWISTING, WINDING,SPINNING, OR LIKE MACHINES Original Filed July 23, 1934 3 Sheets-Sheet lDec. 15, 1936. H. OWENS 2,064,491

SELECTIVE TRAPPING OR CUTTING DEVICE FOR USE IN TWISTING, WINDING,SPINNING, OR LIKE MACHINES Original Filed July 25, 1934 5 Sheets-Sheet 2ff "VMM QM Wr/way Dec. I5, 1936. OWENS 2,064,491

K SELECTIVE TRAPPING OR CUTTING DEVICE FOR USE IN TWISTING, WINDING,SPINNING, OR LIKE MACHINES Original Filed July 23, 1954 5 Sheets-Sheet 3Patented Dec. 15, 1936 UNITED sm OFFICE SELECTIVE TRAPPING R CUTTINGDEVICE FOR USE IN TWISTLKNG, WINDING, SPIN- NING OR. LIKE MACHINESApplication .luly 23, 1934, Serial No. 736,472 Renewed March 7, 1936 13Claims.

My invention relates to impro-vements in a selective trapping or cuttingdevice for use in twisting, winding, spinning or like machines in whichtwo spaced strands from two sources of supply are twisted or woundtogether by suitable twisting, draft or winding means, such as a dollyroll, draft rolls, etc.

In a sense my invention is an improvement on Patent No. 1,608,362,issued to Forster'S. Bootes of Worcester, Massachusetts, for Cuttingdevice for twisting machines on November 23, 1926, and now owned by me.In this patent a single knife was actuated on the breakage of one of twostrands located in front of said twisting or draft means to raise saidknife to positively break both strands. In practice it was found highlydesirable to employ a cutting knife therein for this feature for if amere trapping edge were employed and a thicker yarn were being twistedwith a lighter yarn the device would not function to break the lighteryarn. To overcome this disadvantage of the Bootes structure I have madethe Bootes structure selective by causing one of the levers shown in theBootes structure to positively trap or break the opposite thread onbreakage of the thread by which said lever is supported, thus to providea positive means to break the other strand on breakage of one stranddespite irregularities in the respective sizes of the yarns beingtwisted, wound or spun.

Objects of my invention therefore, are to provide an improved device ofthis description in some respects similar to that shown in the Bootesstructure, but which in place of the single knife of Bootes, selectivetrapping edges each actuated by the respective levers of Bootes areemployed.

A further object of my invention is to provide such a selective trappingor cutting feature in combination with the automatic threading meansshown in Bootes.

A further feature of my invention is to provide a supplemental pivotedlever having a power arm extending around the twisting, winding, ordraft` means in the machine employed and adapted to be supported by thesingle strand from the front of said twisting, winding orV draft meansand adapted on breakage thereof to simultaneously raise both trappingmeans or levers to break both threads or strands in rear of the machinebefore they have a chance to get tangled up inthe draft rolls, dollyroll, etc., of the twisting, winding or draft mechanism employed, and toprovide such a supplemental device to simultaneously actuate bothselective means to break both threads or strands in rear of saidtwistingv or draft means on breakage of the single thread in frontthereof and preferably also in combination with the automatic threadingfeatures shown in Bootes.

Further objects of my invention are to provide a compact, neat structurewhich may be readily -5' attached-between the usual supply bobbins andthe twisting or draft means on a twisting, winding, spinning, or likemachine, preferably comprising an open ended box member in which thecutting l levers or other mechanisms are mounted toV keep them clearfrom lint, dirt, etc., during the normal operation of the device and Ipreferably also provide my improved open ended box-like structure with apivoted top wall so that if desired for y cleaning purposes the top wallmay be pivoted upwards.

These and such other objects of my invention as may hereinafter appearwill be best understood from a description of the embodiments thereofillustrated in the accompanying draw- 2O 1ings.

In the drawings, Fig. l is a diagrammatic sectional view taken through atwisting frameemploying a single dolly twisting roll and illustrating myinvention attached between the dolly roll and supply bobbins thereof.

Fig. 2 is a plan view of a portion of the twisting frame having myinvention attached, shown in Fig. 1.

Fig. 3 is a side elevation of my improved selec- 30' tive trapping orcutting device.

Fig. 4 is a plan View thereof with the top plate thereof removed andillustrating how each respective pivoted lever thereof is connected withthe opposite strand.

Fig. 5 is a rear elevational view thereof.

Fig. 6 is a longitudinal sectional View thereof taken along the line 5 6of Fig. 4.

Fig. 7 is a longitudinal View thereof generally similar to Fig. 6 inwhich the ends of the levers 40 themselvesare shaped into thread'breaking edges and eliminating the pivoted cutting or trapping armsshown in the other embodiment and having cutting instead of trappingedges. y

Fig. 8 is across sectional view through a spin- 5 ning frarne showing myinvention attached to a portion thereof.

In the drawings, wherein like characters of reference indicate likeparts throughout, Il) generally indicates a selective trapping orcutting device 56 for use inv twisting, winding, spinning, or like'machined constructed in accordance with my invention. I

My invention is adapted to be used where strands from two sources ofsupply are combined by means or mechanism into a single strand and whereit is desirable on breakage of one strand to selectively break the otherstrand and to provide a device which is at all times positive in itsaction. I have shown in Fig. 1 my invention mounted on atwisting frameI2 having the bracket I4 projecting upwardly therefrom, a twisting dollyroll I6 rotatably mounted thereon and a yarn guide I8 for guiding thetwisted yarn onto the revolving bobbin 2Q, each of the two strands ofyarn, 2Ba and 281) being led from the respective supply bobbins 22a and221. I have shown in Fig. 8 my invention applied to a spinning frame,the threads being led from the respective supply bobbins 22a and 221)through my improved trapping or cutting device I0, under the usual upperdraft rolls I3 thereof, and through the guide I8 in a single thread 30from said draft rolls I6'. On the spinning frame, however, the lowerdraft rolls 24 are mounted on the stand 26. The bracket I4 forsupporting my improved selective trapping or cutting device I0 projectsupwardly from said stand 26. Thus as shown in Fig. 1 the dolly roll I6forms the twisting means, whereas in Fig. 8 the draft rolls I6 and 24form the draft or twisting means. Thus the strands 28a and 281 in eitherembodiment are led from their respective supply bobbins 22a and 221Jthrough my improved selective trapping or cutting device It through thetwisting or draft means I6 or I6 on the machine on which my invention isemployed, namely, in the two embodiments shown the dolly roll I6 shownin Fig. 1 and the draft rolls IB and 24 shown in Fig. 8 from which meansthere emerges a single strand 33 conducted through the guide I8 and ontothe bobbin 20.

My improved selective trapping or cutting device per se includes theyarn guide means 32 shaped to keep a pair. of strands from adjacentsources of supply separate, and to spacethem the desired distance apartfor threading on the hooked portions, a pair of selective means, such asthe levers 34a and 341) one for each respective strand 28a and 281j eachhaving a hooked portion 36a and 361) adapted to be supported by one ofsaid yarn strands and a strand breaking portion 388L and 381 preferablyadapte-d to function against said yarn guide means 32 or other portionof the frame to positively cut or trap said opposite strand on breakageof its respective strand. Each respective lever is provided with ahooked portion 36a and 361) supported by the strand opposite to the oneoverlying it whereby its respective strand breaking portion may breakthe respective opposite strand. I also provide means 42 tosimultaneously thread said hooked portions 36a and 3611 on saidrespective yarn strands 28EL and 281 in combination therewith (to bedescribed in more detail later). I also preferably provide incombination therewith means 44 including a hook portion 46 supported bythe single twisted or wound strand 3D beyond said twisting or draftingmeans I6 of said machine adapted on breakage of said single strand toactuate both said selective means, namely, both trapping edges 382L and381J to cut or trap both of said spaced strands 28ab and 281 to preventsnarls or tangles, etc. in the respective twisting or draft means I5thereof on breakage of said single strand 30.

In my improved embodiment my improved selective trapping or cuttingdevice I0 is preferably constructed as follows: an open ended strandreceiving box member 49 having means 48 depending from the base 5Uthereof for securement thereto on said mahne,

Said device comprises.

thus in the preferred embodiments shown by means of the bolt 52 to thebracket I4, as shown in Figs. 1 and 8, and the side walls 54, one ofsaid side walls being provided with the stop means 55 projectinglaterally from one side thereof. The pivot pin 58 is transverselymounted in suitable holes on said side walls 54 near the rear end ofsaid member 49 and in my preferred embodiment I preferably provide thepivot lugs E0 provided with the pivot holes 62 projecting rearwardlytherefrom to receive the pivot pin. I also provide my improved devicewith a top wall "64 having depending lugs 65 provided with the pivotholes 68 for also pivotally mounting said top wall on said pivot pin 58in order that the entire tcp wall may be raised up for cleaning theinside of my improved box-like device Ill as shown in dotted lines inFig. 3. Means such as the upstanding edges 61 of said side walls areprovided to frictionally engage said top wall to retain it against theupper edges of said side walls. Said top wall 64 is also provided withthe two adjacent holes '10a and 1Gb therein, each laterally spaced andlongitudinally offset from each other and with the strand guide 32preferably projecting obliquely upwardly and rearwardly from the rearend of said top wall 64, being shaped as shown in Fig. 5 with thelateral slot I2 in one side thereof to receive the two yarn strands 28aand 281) and to hold them in spaced apart relationship on each side ofthe enlarged center slot 74 thereof.

As the selective means adapted to be supported by each respective yarnstrand to break the opposite strand I preferably employ a pair of levers34aL and 341 respectively each pivotally mounted on opposite ends ofsaid pivot pin 58 within said box-like member 49 and each having astrand receiving hook 36a and 361 respectively projecting upwardlytherefrom from the heavier power arms 16a and '|61J thereof through thelaterally opposite holes 10a and 101 respectively in said top wall 64 toengage the laterally opposite strands 2811 and 281. Said levers 34a and341 respectively are also provided with the upwardly projecting workarms 'I8a and 1811 respectively adapted to actuate one respectivecutting edge 33a or 381U respectively preferably against the undersurface of said guide 32 to break the opposite strand when said powerarm 'I6a or 161 thereof respectively drops on breakage of a respectivestrand 28a or 281. As shown in Fig. 7 said cutting or trapping edges 38aand 38b are preferably placed on the upstanding portions of said workarms I8a and 181 respectively. In the preferred embodiment shown,

however, I have found it desirable in order to affect better leverage toprovide the supplemental pair of bent armsA a and 801j each providedrespectively with the cutting edges 38a and 381) on the upper endsthereof pivotally mounted on opposite sides of said pivot pins 53 andhaving the inner portions thereof adapted to be abutted by the upwardlyprojecting ends respectively of said lever work arms 'I8a or 181 torespectively break said opposite thread on respective movement thereof.

As the preferred embodiment of means to simultaneously thread the hookportions 331 and 361 of said levers 34a and 34b on the respectivethreads 28a and 2811, I provide a bar 84 transversely pivotally mountedon said side walls below said lever power arms 15a and 161 provided witha handle 86 projecting from one end thereof and having means such as athin plate 88 projecting radially therefrom to abut both said leverpower arms on pivotal movement thereof to move said hooks 136a and 36hupwardly through the respective holes 'ma and 10b to be hooked onto theoverlying strands orgyarn 28EL and 281 and on further movement thereofto the position shown in Fig. 6 to move said means B8 free of saidweighted power arms a and F61 to permit said hooks 36a and iib of saidlevers ille and 34h each to be supported by its respective strand 23aand 28| alone, whereby on breakage of one strand the heavier respectivelever power arm 76a or Iiib may drop to actuate the respective work arm18a or '18h thereof to actuate said cutting or trapping edge :i8a or 38hto break said other strand 2liEL or 28b respectively.

As the preferred embodiment of means M, including a hook portion 46supported by the single twisted or wound strand beyond said twisting ordraft means I6 of said machine adapted on breakage of said strand .3Q toactuate both said selective means 38a and 38b to cut or trap both ofsaid spaced strands 28a and 28h, I provide a rectangular openbox-surrounding yoke 90 having the side walls thereof also independentlymounted on said bar 84, said yoke being provided with a rear work armcross bar 92 adapted to abut and raise upwardly against said guide means32, said lever work arms 78a and 18D as shown in Fig. '7, or saidupwardly bent arms 8i]EL and 8()b as shown in the other figures andhaving a heavier power arm 94 projecting forwardly from said yoke 90being supported by the single, twisted or wound strand 30 beyond thetwisting of draft means I6 of said machine adapted on breakage of .saidstrand 30 to drop to raise the work arm 92 thereof to abut both cutting-or trapping arms 80a, 80h, or 18a or 18" to raise both trapping orcutting edges 38a or 38h against said guide means `32 .or other suitableportion of the machine to break both strands.

I have found out in practice that if a trapping edge as shown in thepreferred embodiment be employed, the running of the mechanism I6 willcause a breakage of the thread if it be permanently trapped between thecutting edge 33a or 33b and the guide means 32, but I may, if desired asshown in Fig. '7 employ a cutting edge in place of a trap- :ping edge.While I have found that a better leverage may be attained by using theinwardly bent arms 8Ga and 80h, I may also as shown in Fig. 7 eliminatethese arms and extend the work arms 78a and 'I8b of said levers 34a and34h to do the ractual selective cutting or trapping, and I may ifdesired eliminate the cage or box described.

It is understood that my invention is not limited to the specificembodiments shown and various deviations may be made therefrom withoutdeparting from the spirit and scope of the appended claims.

What I claim is:

l. A selective trapping or cutting device `for use in twisting, winding,spinning or like machines, comprising an open ended strand receiving boxmember having a base, means on the base thereof for securement theretoto said machine, upstanding side walls, one 'having stop meansprojecting laterally from one side thereof, a pivot pin mountedtransversely thereof near the rear end thereof and pivot lugs projectingrearwardly therefrom and a top wall pivotally mounted for cleaningpurposes on said pivot pin, having means to normally retain it againstthe upper edges of said side walls, and having two adjacent holestherein, laterally spaced'and longitudinally oifset from each other anda strand guide shaped to keep a pair of strands from adjacent lsourcesof supply separated projecting rearwardly 4from the rear end thereof, apair of levers, each pivotally mounted intermediate its ends adjacentone end of said pivot pin within said member and having an upwardlyprojecting work arm and a strand receiving hook projecting upwardly fromthe heavier power arm thereof through the laterally opposite hole insaid top wall to engage .the laterally opposite strand, a pivot pinmounted transversely between said side plate pivot lugs, a pair ofupwardly bent arms each terminating in a trapping or cutting edgepivotally mounted on opposite sides of said pivot `pin and having theinner portion thereof adapted to be abutted by the upwardly projectingend of its respective lever work arm adapted to actuate said cutting ortrapping edge against the under surface of said guide to break theopposite strand when said power arm thereof drops on breakage of astrand, a bar transversely pivotaliy mounted on said side walls belowsaid levei` vpower arms having a handle projecting from one end thereofand having ymeans projecting therefrom to abut said lever power armsadapted on pivotal movement thereof to move said hooks upwardly throughtheir respective holes to be hooked onto the overlying strands of yarn,and on further movement thereof to move said means free of said weightedpower arms and said handle against said stop means to permit said hooksand levers to be supported by the strands alone whereby on breakage ofone strand thereof said heavier lever power arm may drop to actuate thework arm thereof to break said other strand, a rectangular boxsurrounding yoke, having the side Walls thereof independently mounted onsaid bar, a rear work arm cross bar underlying said upwardly bent armsand a heavier power arm projecting forwardly from the power arm portionthereof having a hook projecting upwardly therefrom to be supported bythe single twisted or wound strand beyond the twisting or draft means ofsaid machine adapted on breakage of said strand to raise said work armto abut both cutting -or trapping arms to raise them both against saidguide means to breakr both strands.

2. A selective trapping or cutting device for use in twisting, winding,spinning or like machines, comprising an open ended strand receiving boxmembe' having a base, means on the base thereof for securement theretoto said machine, upstanding side walls, a pivot pin mounted transverselythereof near the rear end thereof, and a top wall having two adjacentholes therein, laterally spaced and longitudinally oiset from each otherand a strand guide shaped to keep a pair of strands from adjacentsources of supply separated projecting rearwardly from the rear endthereof, a pair of levers, each pivotally mounted intermediate its endsadjacent'one end of said pivot pin within said member and having astrand receiving hook projecting upwardly from the heavier power arm.thereof through the laterally opposite hole in said top wall to engagethe laterally opposite strand and an upwardly projecting work armarranged to cause cutting or trapping of the opposite strand againstsaid guide to break the opposite strand when said power arm thereofdrops on breakage of a strandl 3. A selective trapping or cuttingdevice`v for use in twisting, winding, spinning or like Inaohines,comprising an open strand receiving member having a base, means on thebase thereof for securement thereto to said machine, upstanding sidewallshaving a pivot pin mounted transversely thereof near the rear endthereof and pivot lugs projecting rearwardly therefrom and a top wallhaving two adjacent holes therein laterally spaced and longitudinallyoffset from each other and a strand guide shaped to keep a pair ofstrands from adjacent sources of supply separated projecting rearwardlyfrom the rear end thereof, a pair of levers, each pivotally mountedintermediate its ends adjacent one end of said pivct pin within saidmember and having an upwardly projecting work arm and a strand receivinghook projecting upwardly from the heavier powerl arm thereof through thelaterally opposite hole in said top wall to engage the laterallyopposite strand, a pivot pin mounted transversely between said sideplate pivot lugs, a pair of upwardly bent arms each terminating in atrapping or cutting edge pivotally mounted on opposite sides of saidpivot pin and having the inner portion thereof adapted to be abutted bythe upwardly projecting end of its respective lever work arm to actuatesaid cutting or trapping edge against the under surface of said guide tobreak the opposite strand when said power arm thereof drops on breakageof a strand.y

4. A selective trapping or cutting device for use in twisting, winding,spinning or like machines, comprising an open ended strand receiving boxmember having a base, means on the base thereof for securement theretoto said machine, upstanding side walls, a pivot pin mounted transverselythereof near the rear end thereof and a top wall pivotally mounted forcleaning purposes on said pivot pin, having means to normally retain itagainst the upper edges of said side walls and having two adjacent holestherein, laterally spaced and longitudinally offset from each other anda strand guide shaped to keep a pair of strands from adjacent sources ofsupply separated projecting rearwardly from the rear end thereof, a pairof levers, each pivotally mounted intermediate its ends adjacent one endof said pivot pin within said member and having a strand receiving hookprojecting upwardly from the heavier power arm thereof through thelaterally opposite hole in said top wall to engage the laterallyopposite strand and an upwardly projecting work arm arranged to cause acutting or trapping of the opposite strand against the under surface ofsaid guide to break the opposite strand when said power arm thereofdrops on breakage of a strand.

5. A selective trapping or cutting device for use in twisting, winding,spinning or like machines, comprising an open ended strand receiving boxmember having a base, means on the base thereof for securement theretoto said machine, upstanding side walls, one having stop means projectinglaterally from one side thereof,` a pivot pin mounted transverselythereof near the rear end thereof and a top wall having two adjacentholes therein, laterally spaced and longitudinally offset from eachother and a strand guide shaped to keep a pair of strands from adjacentsources of supply separated projecting rearwardly from the rear endthereof, a pair of levers, each pivotally mounted intermediate its endsadjacent one end of Said pivot pin within said member and having astrand receiving hook projecting upwardly from the heavier power armthereof through the laterally opposite hole in said top wall to engagethe laterally opposite strand and an upwardly projecting work armarranged to cause cutting or trapping of the opposite strand against theunder surface of said guide to break the opposite strand when said powerarm thereof drops on breakage of a strand, a bar transversely pivotallymounted on said side walls below said lever power arms having a handleprojecting from one end thereof and having means projecting therefrom toabut said lever power arms adapted on pivotal movement thereof to movesaid hooks upwardly through their respective holes to be hooked onto theoverlying strands of yarn, and on further movement thereof to move saidmeans free of said weighted power arms and said handle against said stopmeans to permit said hooks and levers to be supported by the strandsalone whereby on breakage of one strand thereof said heavier lever powerarm may drop to actuate the work arm thereof to break said other strand.

6. A selective trapping or cutting device for use in twisting, winding,spinning or like machines, comprising an open ended strand receiving boxmember having a base, means on the base thereof for securement theretoto' said machine, upstan'ding side walls, a pivot pin mountedtransversely thereof near the rear end thereof and a top wall having twoadjacent holes therein laterally spaced and longitudinally offset fromeach other and a strand guide shaped to keep a pair of strands fromadjacent sources of supply separated projecting rearwardly from the rearend thereof, a pair of levers, each pivotally mounted intermediate itsends adjacent one end of said pivot pin within said member and having astrand receiving hook projecting upwardly from the heavier power armthereof through the laterally opposite hole in said top wall to engagethe laterally opposite strand and an upwardly projecting work armarranged to cause cutting or trapping of the opposite strand against theunder surface of said guide to break the opposite strand when said powerarm thereof drops on breakage of a strand, a rectangular box surroundingyoke, having the side walls thereof independently mounted on said bar, arear work arm cross bar underlying said cutting arms and a heavier powerarm projecting forwardly from the power arm portion thereof having ahook projecting upwardly therefrom to be supported by the single twistedor wound strand beyond the twisting or draft means of said machineadapted on breakage of said strand to raise said work arm to abut bothcutting or trapping arms to raise them both against said guide means tobreak Both strands.

7. A selective trapping or cutting device for use in twisting, winding,spinning or like machines, comprising an open ended strand receiving boxmember having a base, means on the base thereof for securement theretoto said machine, up'- standing side walls, a pivot pin mountedtransversely thereof near the rear end thereof and a top wall having twoadjacent holes therein laterally spaced and longitudinally offset fromeach other and a strand guide shaped to keep a pair of strands fromadjacent sources of supply separated projecting rearwardly from the rearend thereof, a pair of levers, each pivotally mounted intermediate itsends adjacent one end of said pivot pin within said member and having astrand receiving hook projecting upwardly from the heavier power armthereof through the laterally opposite hole in said top wall to engagethe laterally opposite strand and an upwardly projecting work armarranged to cause cutting or trapping of the opposite strand against theunder surface of said guide to break the' opposite strand when saidpower arm thereof drops on breakage of a strand, a supplementalpivotably mounted lever having a rear work arm cross bar underlying saidlever work arms and a heavier power arm having la hook projectingupwardly therefrom to be supported by the single twisted or wound strandbeyond the twisting or draft means of said machine adapted on breakageof said strand to raise said work arm to abut both cutting or trappingarms to raise them both against said guide means to break both strands.

8. A selective trapping or cutting device for use in twisting, winding,spinning or like machines, comprising a pivot pin, a strand guide shapedto keep a pair of strands from adjacent sources of supply separated, apair of levers, each pivotally mounted intermediate its ends adjacentone end of said pivot pin and having an upwardly projecting work arm anda strand receiving hook projecting upwardly from the heavier power armthereof to engage the laterally opposite strand, a pivot pin mountedtransversely below said guide, and a pair of upwardly bent arms eachterminating in a trapping or cutting edge pivotally mounted on oppositesides of said pivot pin and having the inner portion thereof adapted tobe abutted by the upwardly projecting end of its respective lever workarm adapted to actuate said cutting or trapping edge against said guideto break the opposite strand when said power arm thereof drops onbreakage of a strand, a bar transversely pivotally mounted below saidlever power arms having a handle projecting from one end thereof andhaving means projecting therefrom to abut said lever power arms adaptedon pivotal movement thereof to move said hooks upwardly to be hookedonto the overlying strands of yarn, and on further movement thereof tomove said means free of said weighted power arms and said handie topermit said hooks and levers to be supported by the strands alonewhereby on breakage of one strand thereof said heavier lever power armmay drop to actuate the work arm thereof to break said other strand, asupplemental pivotally mounted lever having a rear work arm cross barunderlying said upwardly bent arms and a heavier' upwardly projectingpower arm having a hook projecting upwardly therefrom to be supported bythe single twisted or wound strand beyond the twisting or draft means ofsaid machine adapted on breakage of said strand to raise said work armto abut both cutting or trapping arms to raise them both against saidguide means to break both strands.

9. A selective trapping or cutting device for use in twisting, winding,spinning or like machines, comprising a pivot pin, a strand guide shapedto keep a pair of strands from adjacent sources of supply separated, apair of levers, each pivotally mounted intermediate its ends adjacentone end of said pivot pin and having an upwardly projecting work arm anda strand receiving hook projecting upwardly from the heavier power armthereof to engage the laterally opposite strand, a pivot pin mountedtransversely below said guide and a pair of upwardly bent arms eachterminating in a trapping or cutting edge pivotally mounted on oppositesides of said pivot pin and having the inner portion thereof adapted tobe abutted by the upwardly projecting end of its respective lever workarm to actuate said cutting or trapping edge against said guide to breakthe opposite strand when said power arm thereof drops on breakage of astrand.

10. A selectiveV trapping or cutting device for' use in twisting,winding, spinningor like machilies, comprising a pivot pin, a strandguide' shaped to keep a pair of strands from-adjacent sources of supplyseparated, a'pair of levers, each pivotally mounted intermediate itsends adjacent one end of said pivot pin and having a strand receivinghook projecting upwardly from the heavier power arm thereof to engagethe laterally opposite strand and an upwardly projecting work armarranged to cause cutting or trapping of the opposite strand against theunder surface of said guide to break the opposite strand when said powerarm thereof drops on breakage of a strand, a bar transversely pivotallymounted below said lever power arms having a handle projecting from oneend thereof and having means projecting therefrom to abut said leverpower arms adapted on pivotal movement thereof to move said hooksupwardly to be hooked onto the overlying strands of yarn, and on furthermovement thereof to move said means free of said weighted power arms andsaid handle to permit said hooks and levers to be supported by thestrands alone whereby on breakage of one strand thereof said heavierlever power arm may drop to actuate the work arm thereof to break saidother strand.

11. A selective trapping or cutting device for use in twisting, winding,spinning or like machines, comprising a pivot pin, a strand guide shapedto keep a pair of strands from adjacent sources of supply separated, apair of levers, each pivotally mounted intermediate its ends adjacentone end of said pivot pin and having a strand receiving hook projectingupwardly from the heavier power arm thereof to engage the laterallyopposite strand and an upwardly projecting work arm arranged to causecutting or trapping of the opposite strand against said guide to breakthe opposite strand when said power arm thereof drops on breakage of astrand, a supplemental pivotably mounted lever having a rear work armcross bar underlying said lever work arms and a heavier power arm havinga hook projecting upwardly therefrom to be supported by the singletwisted or wound strand beyond the twisting or draft means of saidmachine adapted on breakage of said strand to raise said work arm toabut both cutting or trapping arms to raise them both against said guidemeans to break both strands.

12. In a selective trapping or cutting device for use in twisting,winding, spinning or like machines, having twisting or draft means, yarnguide means shaped to keep a pair of strands from adjacent sources ofsupply separate, a pair of selective means each having a hook portionadapted to be supported by one of said yarn strands and a strandbreaking portion adapted to function against said yarn guide means topositively cut or trap said opposite strand on breakage of itsrespective strand, means to simultaneously thread said hook portions onsaid yarn strands and means, including a hook portion supported by thesingle twisted or wound strand beyond said Itwisting or draft means ofsaid machine, adapted on breakage of said strand to actuate both saidselective means to cut or trap both of said spaced strands.

13. In a selective trapping o-r cutting device for use in twisting,winding, spinning or like machines, having twisting or draft means, yarnguide means shaped to keep a pair of strands from adjacent sources ofsupply separate, a pair of selective means each having a hook portionadapted to be supported by one of said yarn strands and a. strandbreaking portion adapted `to function against a portion of said machineto positively cut or trap said opposite strand on breakage of itsrespective strand, means to simultaneously thread said hook portions onsaid yarn strands and means, including a hook portion

